Add WASIp3 support

Author: newpavlov

Cargo.lock

@@ -69,10 +69,14 @@ libc = { version = "0.2.154", default-features = false }
 [target.'cfg(target_os = "vxworks")'.dependencies]
 libc = { version = "0.2.154", default-features = false }
 
-# wasi_p2
+# wasi_p2_3
 [target.'cfg(all(target_arch = "wasm32", target_os = "wasi", target_env = "p2"))'.dependencies]
 wasip2 = { version = "1", default-features = false }
 
+# wasi_p2_3
+[target.'cfg(all(target_arch = "wasm32", target_os = "wasi", target_env = "p3"))'.dependencies]
+wasip3 = { version = "0.3", default-features = false }
+
 # wasm_js
 [target.'cfg(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "none")))'.dependencies]
 wasm-bindgen = { version = "0.2.98", default-features = false, optional = true }

Cargo.toml

@@ -151,9 +151,9 @@ cfg_if! {
             if #[cfg(target_env = "p1")] {
                 mod wasi_p1;
                 pub use wasi_p1::*;
-            } else if #[cfg(target_env = "p2")] {
-                mod wasi_p2;
-                pub use wasi_p2::*;
+            } else if #[cfg(any(target_env = "p2", target_env = "p3"))] {
+                mod wasi_p2_3;
+                pub use wasi_p2_3::*;
             } else {
                 compile_error!(
                     "Unknown version of WASI (only previews 1 and 2 are supported) \